68180969 has 2 divisors, whose sum is σ = 68180970. Its totient is φ = 68180968.

The previous prime is 68180951. The next prime is 68181007. The reversal of 68180969 is 96908186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36966400 + 31214569 = 6080^2 + 5587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68180969 is a prime.

It is a super-2 number, since 2×68180969² = 9297289067557922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68182969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34090484 + 34090485.

It is an arithmetic number, because the mean of its divisors is an integer number (34090485).

Almost surely, 2^68180969 is an apocalyptic number.

It is an amenable number.

68180969 is a deficient number, since it is larger than the sum of its proper divisors (1).

68180969 is an equidigital number, since it uses as much as digits as its factorization.

68180969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 68180969 is about 8257.1768177749. The cubic root of 68180969 is about 408.5272742839.

The spelling of 68180969 in words is "sixty-eight million, one hundred eighty thousand, nine hundred sixty-nine".